Vitamin B2

Vitamin B2, an essential water-soluble vitamin and yellow food colorant. The general Vitamin B2 listing covering the standard Riboflavin grades; the related Riboflavin 5'-Phosphate Sodium (water-soluble form, E101ii) and feed-grade 80 percent SKUs are sold separately.

Yellow to orange crystalline powder. Light-sensitive and oxidation-sensitive; requires sealed light-protective packaging. Functions as the precursor to FAD and FMN coenzymes essential to cellular energy metabolism, and is a recognized food colorant under E101.

We supply food-grade, feed-grade, and pharmaceutical-grade Riboflavin from manufacturers in China holding ISO, Halal, Kosher and other certifications relevant to the product and production.

Common market grades include 96 percent Food Grade (the dominant supplement and food-fortification form), 80 percent Feed Grade (for animal nutrition premixes), USP/BP/EP Pharmaceutical Grade, and Coated Riboflavin for stability in fortified foods exposed to light or high humidity.

Bulk and reduced-MOQ shipments. Batch-level COA covering assay, specific rotation, related substances, heavy metals, and microbiology.

This SKU is the general Vitamin B2 (Riboflavin) listing, covering the standard 96 percent food-grade and pharmaceutical-grade Riboflavin material. It exists alongside the more specific batch-1 SKU and the separate Riboflavin 5'-Phosphate Sodium and 80 percent feed-grade listings, allowing buyers to order against the general vitamin name when grade choice is open.

Riboflavin was first isolated from milk whey in 1879 and characterized through the 1930s. The compound functions as the precursor to flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD), essential coenzymes for oxidation-reduction reactions in cellular metabolism.

Modern industrial production proceeds by fermentation using Ashbya gossypii or recombinant Bacillus subtilis, which has displaced earlier chemical synthesis routes due to better yields and lower costs. The fermentation broth is purified by crystallization to yield food-grade and pharmaceutical-grade material.

Regulated as E101 in the EU, classified as Generally Recognized as Safe by the U.S. FDA, listed in BP, USP, EP, and JP pharmacopoeias, and approved by JECFA with an Acceptable Daily Intake of 0.5 mg per kg body weight. The molecule's dual function as vitamin and colorant is unique among the B vitamins.

• Animal feed fortification: poultry, swine, aquaculture, and dairy cattle
• Dietary supplements: B-complex and multivitamin formulations
• Pharmaceutical applications: tablets, capsules, and oral solutions
• Yellow food colorant under E101: pasta, salad dressings, sherbet, and dessert mixes
• Infant formula and clinical nutrition formulations
• Fortified breakfast cereals and breads
• Energy drinks and functional beverages (the source of the characteristic bright yellow color)
• Premix manufacturing for vitamin and mineral fortification